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DayNight with a skybox?


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From my understanding, it works off of math calculations. Not by having an image rotate.

 

To change the color of the sky, you'd have to change the math behind it.

 

Look at daynight.shader.

 

Shadmar was very kind to comment it nicely.

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To get the color of the sky, they calculate what an atmosphere does to light of the sun color.

 

See totalMie function in the shader.

 

I believe this is the paper Shadmar built this shader upon.

 

http://developer.amd.com/wordpress/media/2012/10/GDC_02_HoffmanPreetham.pdf

 

There's a comment on line 485 in the shader relating to star position.

 

"//stars" Although the original source is no longer found at the link "http://glsl.heroku.com/e#18186.0"

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